Checking if your kit is complete... Looks good Writing Makefile for Regexp::Compare Microsoft (R) Program Maintenance Utility Version 6.00.8168.0 Copyright (C) Microsoft Corp 1988-1998. All rights reserved. cp lib/Regexp/Compare.pm blib\lib\Regexp\Compare.pm C:\cpanrun\build\5-10-0\bin\perl.exe C:\cpanrun\build\5-10-0\lib\ExtUtils\xsubpp -typemap C:\cpanrun\build\5-10-0\lib\ExtUtils\typemap Compare.xs > Compare.xsc && C:\cpanrun\build\5-10-0\bin\perl.exe -MExtUtils::Command -e mv Compare.xsc Compare.c cl -c -I. -nologo -GF -W3 -MD -Zi -DNDEBUG -O1 -DWIN32 -D_CONSOLE -DNO_STRICT -DHAVE_DES_FCRYPT -DUSE_SITECUSTOMIZE -DPRIVLIB_LAST_IN_INC -DPERL_IMPLICIT_CONTEXT -DPERL_IMPLICIT_SYS -DUSE_PERLIO -DPERL_MSVCRT_READFIX -MD -Zi -DNDEBUG -O1 -DVERSION=\"0.06\" -DXS_VERSION=\"0.06\" "-IC:\cpanrun\build\5-10-0\lib\CORE" Compare.c Compare.c Compare.xs(31) : error C2039: 'program' : is not a member of 'regexp' C:\cpanrun\build\5-10-0\lib\CORE\regexp.h(69) : see declaration of 'regexp' Compare.xs(31) : error C2039: 'program' : is not a member of 'regexp' C:\cpanrun\build\5-10-0\lib\CORE\regexp.h(69) : see declaration of 'regexp' Compare.xs(31) : error C2198: 'rc_compare' : too few actual parameters NMAKE : fatal error U1077: 'cl' : return code '0x2' Stop.